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Aggressive Exterior and Interior Sound
1999-2000 GMC C2500
and the internationally recognized ISO-9001 and MRP-Oliver Wight Class "A" certifications
Noticeable increase over stock cam
Holley Fuel Cell EFI Pump Module Assembly YA0651 Aggressive Exterior and Interior SoundUpdating your racing fuel system to EFI is so simple! Holley is excited to introduce our Holley Fuel Cell EFI Pump Modules. While the name includes EFI, these modules can be used as an upgrade for carbureted systems as well with the proper regulator. The modules were designed to drop in as a direct replacement for your existing 6 or 12 bolt flange fuel cell cap assembly. The billet top flange includes an 8AN inlet port, a 10AN outlet port, and a fuel